next, disaster in japan. and later, daniel radcliffe from harry potter.,,,,,,,,,,,,,, >> osgood: of all the stories we're following in the aftermath of friday's earthquake in japan, perhaps the most worrisome just now comes from a city of fukushima north of tokyo. it's believed a partial meltdown is underway at a nuclear complex there. that has forced the evacuation of some 200,000 people. we have the latest on that after which we'll be hearing from ben tracy reporting from tokyo. >> reporter: friday's massive earthquake has at least a japan nuclear nightmare with the government saying a partial meltdown is likely underway at a second of three reactors affected by the massive quake. all three of the faulty fukushima reactors lost their cooling ability after friday's trembler. saturday an explosion blew off the outer enclosure on one of the reactor's shells. it's believed the blast was the result of an effort to cool its overheating core. thus far the reactor core remains intact. >> the situation has been dang